CN107471123B - A method for improving thermal sensitivity of low temperature vitrified bond - Google Patents
A method for improving thermal sensitivity of low temperature vitrified bond Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008542 thermal sensitivity Effects 0.000 title claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007580 dry-mixing Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000010902 jet-milling Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 6
- 239000003082 abrasive agent Substances 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 239000007790 solid phase Substances 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical group 0.000 description 3
- 238000009776 industrial production Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/14—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
Abstract
本发明专利涉及一种改善低温陶瓷结合剂热敏感性的方法。属于磨料磨具与陶瓷结合剂技术领域。其技术方案是：将细粒度的α氧化铝粉末与普通的低温陶瓷结合剂原料进行混合并高温熔炼，这时α氧化铝颗粒界面与液体陶瓷结合剂充分反应同时仍然能够保证其强度与硬度，因此使用此种方法做成的低温陶瓷结合剂在烧结过程中在很大温度范围内始终保持液相与固相共存的状态，因此能够极大改善低温陶瓷结合剂的温度敏感性。此方法的优点是：仅仅通过改变α氧化铝的用量就可以在基本不改变陶瓷结合剂耐火度的情况下调整烧结过程中结合剂的流动性，使得结合剂对温度的敏感性大大降低，从而提高产品稳定性。The patent of the present invention relates to a method for improving the thermal sensitivity of low temperature ceramic bond. It belongs to the technical field of abrasives and ceramic bonding agents. The technical scheme is as follows: the fine-grained α-alumina powder is mixed with ordinary low-temperature ceramic binder raw materials and smelted at high temperature. At this time, the α-alumina particle interface fully reacts with the liquid ceramic binder while still ensuring its strength and hardness. Therefore, the low-temperature ceramic bond made by this method always maintains the coexistence of liquid phase and solid phase in a large temperature range during the sintering process, so the temperature sensitivity of the low-temperature ceramic bond can be greatly improved. The advantage of this method is that the fluidity of the binder during the sintering process can be adjusted without changing the refractoriness of the vitrified binder only by changing the amount of α-alumina, so that the sensitivity of the binder to temperature is greatly reduced. Improve product stability.
Description
技术领域technical field
本发明专利属于磨料磨具与陶瓷结合剂技术领域，具体涉及一种改善低温陶瓷结合剂热敏感性的方法。The patent of the invention belongs to the technical field of abrasives and ceramic bonds, and specifically relates to a method for improving the thermal sensitivity of low-temperature ceramic bonds.
背景技术Background technique
陶瓷磨具相较其他磨具具有磨削精度高、自锐性好、耐酸碱、易修整等优点，所以被广泛应用在粗磨、精磨和抛光中，尤其是在精密加工中陶瓷磨具占有很重要的地位。在陶瓷磨具中磨具的磨削性能与磨粒、结合剂和气孔密切相关，而陶瓷结合剂的性能是影响磨具性能的最主要的原因之一。在超硬材料陶瓷磨具中，超硬磨粒对结合剂的要求相对较高，其中一个很重要的性能是要求结合剂的耐火度要低，一般低于800 ℃，称为低温陶瓷结合剂，如果耐火度过高则容易造成磨粒热损伤。随着加工技术的发展，工业生产对低温陶瓷结合剂的要求越来越高，例如，磨具质量稳定性，普通的低温陶瓷结合剂在烧结过程中对温度非常敏感，如果炉温稍有差别，就造成陶瓷结合剂流动性差别很大，从而使得磨具质量波动较大。Compared with other abrasive tools, ceramic abrasive tools have the advantages of high grinding accuracy, good self-sharpening, acid and alkali resistance, and easy dressing, so they are widely used in rough grinding, fine grinding and polishing, especially in precision machining. holds a very important position. In ceramic abrasives, the grinding performance of abrasives is closely related to abrasive particles, binders and pores, and the performance of ceramic binders is one of the most important reasons for affecting the performance of abrasives. In the superhard material ceramic abrasive tools, the superhard abrasive particles have relatively high requirements for the binder. One of the important properties is that the refractoriness of the binder is required to be low, generally lower than 800 ℃, which is called low temperature ceramic binder. , if the refractory is too high, it is easy to cause thermal damage to the abrasive particles. With the development of processing technology, industrial production has higher and higher requirements for low-temperature ceramic bonds, for example, the quality stability of abrasive tools, ordinary low-temperature ceramic bonds are very sensitive to temperature during the sintering process, if the furnace temperature is slightly different , resulting in a large difference in the fluidity of the vitrified bond, which makes the quality of the abrasive fluctuate greatly.
因此，本发明针对工业生产中所使用的低温陶瓷结合剂在烧结过程中对温度太敏感的缺点，提出一种改善低温陶瓷结合剂热敏感性的方法。Therefore, the present invention proposes a method for improving the thermal sensitivity of the low-temperature ceramic bond in view of the disadvantage that the low-temperature ceramic bond used in industrial production is too sensitive to temperature during the sintering process.
发明内容SUMMARY OF THE INVENTION
技术问题：本发明需要解决的技术问题是低温陶瓷结合剂对烧结温度的敏感性高，造成陶瓷磨具质量不稳定。Technical problem: The technical problem to be solved by the present invention is that the low temperature ceramic bond has high sensitivity to the sintering temperature, resulting in unstable quality of the ceramic abrasive tool.
技术方案：为了实现上述目的，本发明提供一种改善低温陶瓷结合剂热敏感性的方法包括以下步骤：Technical scheme: In order to achieve the above object, the present invention provides a method for improving the thermal sensitivity of low-temperature ceramic bond, comprising the following steps:
①选择一种低温陶瓷结合剂原料配方；①Choose a low-temperature ceramic bond raw material formula;
②选择超细α氧化铝粉末；②Choose ultra-fine α-alumina powder;
③将步骤①中选择的陶瓷结合剂原料和步骤②中选择的α氧化铝粉末按比例均匀共混；③ uniformly blend the vitrified binder raw material selected in step ① and the α-alumina powder selected in step ② in proportion;
④将步骤③中的共混物干燥后在熔炼炉中高温熔炼，并快速冷却得到玻璃料；④ drying the blend in step ③, smelting at high temperature in a smelting furnace, and rapidly cooling to obtain glass frit;
⑤将步骤④中的玻璃料磨细成为陶瓷结合剂。⑤ The glass frit in step ④ is ground into a ceramic bond.
所述步骤①中低温陶瓷结合剂耐火度≤700 ℃。 In the step (1), the refractoriness of the medium and low temperature ceramic bond is less than or equal to 700 °C.
所述步骤②中超细α氧化铝粉末平均粒度在200nm~5μm。In the step ②, the average particle size of the ultrafine α-alumina powder is 200 nm to 5 μm.
所述步骤③中α氧化铝粉末的添加比例占陶瓷结合剂原料质量的10%~50%，混料方式为干混或者球磨湿混。In the step (3), the addition ratio of the α-alumina powder accounts for 10% to 50% of the quality of the raw material of the vitrified bond, and the mixing method is dry mixing or ball milling and wet mixing.
所述步骤④中的熔炼温度应当在1200℃~1600℃之间。The smelting temperature in the step ④ should be between 1200°C and 1600°C.
所述步骤⑤中玻璃料的磨细方法包括：球磨粉碎或者气流粉碎。The method for grinding the glass frit in step ⑤ includes: ball milling or jet milling.
本发明产生的有益效果是：本发明制备的陶瓷结合剂在烧结过程中在很大温度范围内始终保持液相与固相共存的状态，因此能够极大改善低温陶瓷结合剂的温度敏感性。The beneficial effect of the invention is that the ceramic bond prepared by the invention always maintains the state of coexistence of liquid phase and solid phase in a large temperature range during the sintering process, so the temperature sensitivity of the low temperature ceramic bond can be greatly improved.
下面结合剂具体实例对本发明进一步说明，但是本发明的保护范围不限于此。The following specific examples of the binding agent further illustrate the present invention, but the protection scope of the present invention is not limited thereto.
实例1Example 1
①选择一种R2O-B2O3-Al2O3-SiO2系低温陶瓷结合剂配方(R为碱金属)，其耐火度在550℃左右；①Choose a formula of R 2 OB 2 O 3 -Al 2 O 3 -SiO 2 series low-temperature ceramic bond (R is an alkali metal), and its refractoriness is about 550℃;
②选择平均粒径为800nm的α氧化铝粉末；②Select α-alumina powder with an average particle size of 800nm;
③将步骤①中选择的陶瓷结合剂原料与步骤②中选择的α氧化铝粉按照质量比7：3进行球磨湿混30分钟；③ The vitrified bond raw material selected in step ① and the α-alumina powder selected in step ② are ball-milled and wet-mixed for 30 minutes at a mass ratio of 7:3;
④将步骤③中球磨湿混的混合料进行干燥，然后在熔炼炉中1450 ℃高温熔炼，并快速冷却得到玻璃料；④ Dry the ball-milled and wet-mixed mixture in step ③, then smelt at a high temperature of 1450°C in a smelting furnace, and rapidly cool to obtain glass frit;
⑤将④中的玻璃料球磨破碎到所需粒度得到陶瓷结合剂粉末。⑤ Crush the glass frit in ④ to the required particle size to obtain ceramic bond powder.
实例2Example 2
①选择一种R2O-Al2O3-SiO2系低温陶瓷结合剂配方(R为碱金属)，其耐火度在550℃左右；①Choose a formula of R 2 O-Al 2 O 3 -SiO 2 series low-temperature ceramic bond (R is an alkali metal), and its refractoriness is about 550℃;
②选择平均粒径为600nm的α氧化铝粉末；②Select α-alumina powder with an average particle size of 600nm;
③将步骤①中选择的陶瓷结合剂原料与步骤②中选择的α氧化铝粉按照质量比7：2进行球磨湿混30分钟；③ The vitrified bond raw material selected in step ① and the α-alumina powder selected in step ② are ball-milled and wet-mixed for 30 minutes at a mass ratio of 7:2;
④将步骤③中球磨湿混的混合料进行干燥，然后在熔炼炉中1400 ℃高温熔炼，并快速冷却得到玻璃料；④ Dry the ball mill wet-mixed mixture in step ③, then smelt at a high temperature of 1400°C in a smelting furnace, and rapidly cool to obtain glass frit;
⑤将④中的玻璃料球磨破碎到所需粒度得到陶瓷结合剂粉末。⑤ Crush the glass frit in ④ to the required particle size to obtain ceramic bond powder.
实例3Example 3
①选择一种R2O-Al2O3-SiO2系低温陶瓷结合剂配方(R为碱金属)，其耐火度在600℃左右；①Choose a formula of R 2 O-Al 2 O 3 -SiO 2 series low-temperature ceramic bond (R is an alkali metal), and its refractoriness is about 600℃;
②选择平均粒径为600nm的α氧化铝粉末；②Select α-alumina powder with an average particle size of 600nm;
③将步骤①中选择的陶瓷结合剂原料与步骤②中选择的α氧化铝粉按照质量比9：1进行球磨湿混30分钟；③ The vitrified bond raw material selected in step ① and the α-alumina powder selected in step ② are ball-milled and wet-mixed for 30 minutes at a mass ratio of 9:1;
④将步骤③中球磨湿混的混合料进行干燥，然后在熔炼炉中1400 ℃高温熔炼，并快速冷却得到玻璃料；④ Dry the ball mill wet-mixed mixture in step ③, then smelt at a high temperature of 1400°C in a smelting furnace, and rapidly cool to obtain glass frit;
⑤将④中的玻璃料球磨破碎到所需粒度得到陶瓷结合剂粉末。⑤ Crush the glass frit in ④ to the required particle size to obtain ceramic bond powder.
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|---|---|---|---|---|
| EP1288162A2 (en) * | 2001-08-30 | 2003-03-05 | Fujimura, Tadamasa | Stable aqueous suspension liquid of finely divided diamond particles metallic film containing diamond particles and method of producing the same |
| CN102794713A (en) * | 2005-09-30 | 2012-11-28 | 圣戈本磨料股份有限公司 | Bonded abrasive tool |
| CN106431364A (en) * | 2016-09-09 | 2017-02-22 | 苏州创元新材料科技有限公司 | Method for preparing high-temperature sintering ceramic aluminum oxide grinding material |
| CN106747355A (en) * | 2016-12-15 | 2017-05-31 | 萍乡顺鹏新材料有限公司 | A kind of ceramic grinding body and preparation method thereof |
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Patent Citations (4)
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|---|---|---|---|---|
| EP1288162A2 (en) * | 2001-08-30 | 2003-03-05 | Fujimura, Tadamasa | Stable aqueous suspension liquid of finely divided diamond particles metallic film containing diamond particles and method of producing the same |
| CN102794713A (en) * | 2005-09-30 | 2012-11-28 | 圣戈本磨料股份有限公司 | Bonded abrasive tool |
| CN106431364A (en) * | 2016-09-09 | 2017-02-22 | 苏州创元新材料科技有限公司 | Method for preparing high-temperature sintering ceramic aluminum oxide grinding material |
| CN106747355A (en) * | 2016-12-15 | 2017-05-31 | 萍乡顺鹏新材料有限公司 | A kind of ceramic grinding body and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 新型陶瓷刚玉磨具低温陶瓷结合剂的研究与制备;赵光涛;《中国优秀硕士论文全文数据库 工程科技I辑》;20140815;正文第8-10、22页，附图2-2 * |
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